Year	Number
1970	136782
1971	139251
1973	156440
1975	176224
1976	177992
1977	178186
1978	179811
1979	176521
1980	173693
1981	177238
1982	176845
1983	182343
1984	187764
1985	190328
1986	203088
1987	202857
1988	201755
1989	199076
1990	191459
1991	185713
1992	182149
1993	180729
1994	197981
1995	203662
2007	204269
2008	204146
2009	205171
2016	179225
2017	171319